Yoke for railway-conduits



No. 6l3,30l. v Patented Nov. l,' I898. F. S. PEARSON. Y0K; FOR RAILWAY counulTs.

(Application filed Nov. 4, 1897) (No Model.)

m: NORRIS Pzrzas co, wnoraumu, wnsnmmuu d c.

rrn TATES FRED S. PEARSON, OF BOSTON, MASSACHUSETTS.

YOKE FOR RAlLWAY-CONDUITS.

SPECIFICATION forming part of Letters Patent No. 613,301, dated November 1, 1898.

Application filed November 4, 1897. Serial No. 667,365. (No model.)

To all whom, it 77t6ty concern.-

Be it known that I, FRED S. PEARSON, a citizen of the United States, and a resident of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Yokes for Railway- Conduits, of which the following is a specification.

This improvement relates to yokes used in the construction of conduits for electric railways; and it consists in a novel form and construction of yoke whereby it forms a casing or inclosure for the insulated supports of the electrical conductors.

In the accompanying drawings, illustrating my improvement, Figure 1 is a plan view of the yoke. Fig. 2 is a side elevation, partly in section, showing the insulator for the conductor in position; and Fig. 3 is a sectional end elevation through the line 0c.

The construction of the yoke will be fully understood from the drawings. As there shown, the central portion of the yoke is made hollow and forms an open box having the bottom a, sides I) b, and ends 0 c. In the sides are the usual openings for the central tube or channel, in which are placed the conductors, and above these openings are flanges g g, to which are bolted the slot-rails h h. From each end of the central portion extend the usual arms d d, by which the rails e e are supported.

To the sides and ends of the open central portion, on each side of the slot-rails, are detachably secured the curb-boxes or manholecurbs 11, which are of such a height as to extend to the surface of the street and which are provided with the covers j, through which access is had to the interior of the yoke. In the particular construction shown in the drawings these manhole-curbs are bolted to the yoke and to the slot-rails; but they may be secured in any other manner. As the curb-box is thus detachably connected to the yoke, it can be readily removed and replaced when worn or injured without disturbing the yoke itself or in any way interfering with the traffic on the road.

In the interior of the yoke, on each side of the central tube, are secured the insulated supports m for the electrical conductors n. These are shown as bolted to the flanges g, to which the slot-rails are attached, and on top of the bottom flanges of the latter, but may be secured in any manner, and are so situated as to be easy of access through the manhole i. I

As will thus be seen, this improved yoke, While performing all the ordinary functions of the yoke in the construction of the conduit and supporting the rails in the usual manner, constitutes the inclosure or receptacle in which the conductor-supports are placed, thus rendering the separate box used for that purpose unnecessary, and by reason of its detachable manhole-box allowing the part of the yoke exposed to wear or injury from the traflic in the street to be repaired and renewed without disturbing the yoke itself.

As will be seen from the drawings, the base or bottom p of the yoke on which it rests in the trench is straight and very nearly flat in section, as shown in Fig. 3, and has projecting from it a narrow rib 0, by means of which the yoke is strengthened and is more firmly secured to its foundation. The yoke rests upon and is supported by this base the support under the arms 01 61 being only incidental and serving merely to steady the yoke in the trench.

As shown in Fig. 2, the central opening in the yoke, through which the tube or channel passes, extends down to the base 19 or from the top to the bottom of the yoke. The yoke is thus constructed of a height from its top to its base just sufficient to take in or accommodate the central channel, and hence can be made very low, thus requiring a very shallow trench. This form and construction of the exterior of the yoke not only enables the yoke to be low and shallow, but allows it to be proportionately light, thus requiring a slight foundation on which the yoke rests,and,moreover, with this construction of yoke it is not necessary in constructing the conduit to form separate foundations for the yokes, the yoke resting on the general cement foundation placed in the conduit around the central tube and at the same time under the yokes.

These box-yokes are used in connection with the usual form of yoke, being placed at intervals in the conduit wherever the conduitsupports are located.

Vhat I claim is 1. A yoke for railway-conduits, having a hollow central portion and detachable manhole-curbs flush with the surface of the roadway, substantially as described.

2. A yoke for railway-conduits, adapted to support the slot-rails and wheel-bearing rails, having a hollow central portion and detachable manhole-curbs flush with the surface of the roadway, substantially as described.

3. In a yoke for electric-railway conduits, in combination, a hollow central portion, adapted to contain the supports for the conductors; and manhole-curbs flush with the surface of the roadway detachably connected to the hollow portion of the yoke, substantially as described.

4:. In a yoke for electric-railway conduits, in combination, a hollow central portion adapted to contain the supports for the conductors; manhole-curbs flush with the surface of the roadway detachably connected to the hollow portion of the yoke; and insulatorsupports for the electrical conductors secured in the hollow portion of the yoke, substantially as described.

5. In a yoke for electric-railway conduits supporting the slot-rails and wheehbearing rails, in combination, a hollow central portion, adapted to contain the supports for the conductors; manhole-curbs 2' detachably connected with the hollow portion of the yoke, and provided with the coverj; and conductorsupports m secured in the hollow portion of the yoke, substantially as described.

(3. A yoke for electric-railway conduits, adapted to support the slot-rails and wheelbearing rails, and having the fiat bottom 19; a hollow central portion, arranged and adapted to contain the supports for the conductors; and manhole-curbs flush with the surface of the roadway detachably connected to the hollow portion, substantially as described.

FRED S. PEARSON.

Witnesses:

DANL. W. PATTERSON, OHAs. J. RATHJEN. 

